Fresno Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Fresno, California during each month of the year.
The average high and low temperatures are listed below for the city, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 80, 90 or 100 °F monthly and annually in Fresno, scroll down farther. There are also counts of nights with cool temperatures.
The first set of high and low temperatures are averages for 2010 to 2019. Everything else here is based on 1991 to 2020 weather.
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 59 | 41 | January | 15 | 5 |
| 63 | 43 | February | 17 | 6 |
| 70 | 47 | March | 21 | 9 |
| 76 | 52 | April | 25 | 11 |
| 83 | 57 | May | 28 | 14 |
| 94 | 65 | June | 35 | 18 |
| 100 | 70 | July | 38 | 21 |
| 99 | 68 | August | 37 | 20 |
| 93 | 64 | September | 34 | 18 |
| 81 | 55 | October | 27 | 13 |
| 67 | 46 | November | 20 | 8 |
| 58 | 40 | December | 14 | 4 |
| 79 | 54 | Year | 26 | 12 |
| High °F | Low °F | High °C | Low °C | |
|---|---|---|---|---|
| 55 | 41 | January | 13 | 5 |
| 61 | 43 | February | 16 | 6 |
| 68 | 47 | March | 20 | 9 |
| 74 | 51 | April | 23 | 11 |
| 83 | 58 | May | 28 | 14 |
| 91 | 64 | June | 33 | 18 |
| 98 | 69 | July | 37 | 21 |
| 97 | 68 | August | 36 | 20 |
| 91 | 63 | September | 33 | 17 |
| 79 | 55 | October | 26 | 13 |
| 65 | 45 | November | 18 | 7 |
| 55 | 40 | December | 13 | 4 |
| 76 | 54 | Year | 25 | 12 |
Days of Hot Weather in Fresno
Fresno summers are hot, when all but a few days have highs over 90 and many top 100 Fahrenheit. The 90-degree weather usually begins in April and can linger into October. From May to September, the San Joaquin Valley city averages 38 days with temperatures of 100 °F or more.
| 80 °F 27 °C |
90 °F 32 °C |
100 °F 38 °C | |
|---|---|---|---|
| January | 0 | 0 | 0 |
| February | 0 | 0 | 0 |
| March | 3 | 0 | 0 |
| April | 9 | 2 | 0 |
| May | 22 | 9 | 1 |
| June | 28 | 20 | 7 |
| July | 31 | 30 | 14 |
| August | 31 | 29 | 12 |
| September | 28 | 20 | 4 |
| October | 17 | 4 | 0 |
| November | 1 | 0 | 0 |
| December | 0 | 0 | 0 |
| Year | 170 | 113 | 38 |
How Often Fresno Has Cool Temperatures
Most nights at Fresno never get colder than 40 °F. From November to February, the area averages 11 nights with frost, but even then it always warms up to at least 40 degrees the next day. It's not normal for Fresno to get as cold as 20 °F (-8 °C).
| 32 °F 0 °C |
40 °F 4 °C | |
|---|---|---|
| January | 4 | 17 |
| February | 1 | 11 |
| March | 0 | 5 |
| April | 0 | 1 |
| May | 0 | 0 |
| June | 0 | 0 |
| July | 0 | 0 |
| August | 0 | 0 |
| September | 0 | 0 |
| October | 0 | 0 |
| November | 1 | 8 |
| December | 5 | 19 |
| Year | 11 | 61 |
References
Jay Lawrimore, Ron Ray, Scott Applequist, Bryant Korzeniewski, Matthew Menne. 2016. Global Summary of the Month and Year, Version 1.0. NOAA National Centers for Environmental Information.
NOAA National Centers for Environmental Information (NCEI). Climate Normals.